七、如何选择步进马达驱动器供电电压?
步进马达驱动器,都是宽压输入,输入电压很大的范围可以选择;电源电压通常根据马达的工作转速和响应要求来选择。如果马达工作转速较高或响应要求较快,那么电压取值也高,但注意电源电压的纹波不能超过驱动器的**输入电压,否则可能损坏驱动器。如果选择较低的电压有利于步机马达的平稳运行,振动小。
八、细分驱动器的细分数是否能代表精度
细分也叫微步,主要目的是减弱或**步进马达的低频振动,提高马达的运转精度只是细分技术的一个附带功能。比如对步进角为1.8°的两相混合式步进马达,如果细分驱动器的细分数设置为4,那么马达的运转分辨率为每个脉冲0.45°,马达的精度能否达到或接近0.45°,还取决于细分驱动器的细分电流控制精度等其它因素。不同厂家的细分驱动器精度可能差别很大;细分数越大精度越难控制。
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